/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.servicecomb.foundation.auth;

import java.util.HashMap;
import java.util.Map;

public interface AuthHeaderProvider {
  /**
   * Obtain RBAC authentication request header, host is the key of cache
   *
   * @param host engine address ip
   * @return auth headers
   */
  default Map<String, String> authHeaders(String host) {
    return new HashMap<>(0);
  }

  default Map<String, String> getSignAuthHeaders(SignRequest request) {
    String host = "";
    if (request != null && request.getEndpoint() != null) {
      host = request.getEndpoint().getHost();
    }
    return authHeaders(host);
  }
}
